In the Linux kernel, the following vulnerability has been resolved: sched/fair: Prevent dead task groups from regaining cfs_rq's Kevin is reporting crashes which point to a use-after-free of a cfs_rq in update_blocked_averages(). Initial debugging revealed that we've live cfs_rq's (on_list=1) in an about to be kfree()'d task group in free_fair_sched_group(). However, it was unclear how that can happen. His kernel config happened to lead to a layout of struct sched_entity that put the 'my_q' member directly into the middle of the object which makes it incidentally overlap with SLUB's freelist pointer. That, in combination with SLAB_FREELIST_HARDENED's freelist pointer mangling, leads to a reliable access violation in form of a #GP which made the UAF fail fast. Michal seems to have run into the same issue[1]. He already correctly diagnosed that commit a7b359fc6a37 ("sched/fair: Correctly insert cfs_rq's to list on unthrottle") is causing the preconditions for the UAF to happen by re-adding cfs_rq's also to task groups that have no more running tasks, i.e. also to dead ones. His analysis, however, misses the real root cause and it cannot be seen from the crash backtrace only, as the real offender is tg_unthrottle_up() getting called via sched_cfs_period_timer() via the timer interrupt at an inconvenient time. When unregister_fair_sched_group() unlinks all cfs_rq's from the dying task group, it doesn't protect itself from getting interrupted. If the timer interrupt triggers while we iterate over all CPUs or after unregister_fair_sched_group() has finished but prior to unlinking the task group, sched_cfs_period_timer() will execute and walk the list of task groups, trying to unthrottle cfs_rq's, i.e. re-add them to the dying task group. These will later -- in free_fair_sched_group() -- be kfree()'ed while still being linked, leading to the fireworks Kevin and Michal are seeing. To fix this race, ensure the dying task group gets unlinked first. However, simply switching the order of unregistering and unlinking the task group isn't sufficient, as concurrent RCU walkers might still see it, as can be seen below: CPU1: CPU2: : timer IRQ: : do_sched_cfs_period_timer(): : : : distribute_cfs_runtime(): : rcu_read_lock(); : : : unthrottle_cfs_rq(): sched_offline_group(): : : walk_tg_tree_from(…,tg_unthrottle_up,…): list_del_rcu(&tg->list); : (1) : list_for_each_entry_rcu(child, &parent->children, siblings) : : (2) list_del_rcu(&tg->siblings); : : tg_unthrottle_up(): unregister_fair_sched_group(): struct cfs_rq *cfs_rq = tg->cfs_rq[cpu_of(rq)]; : : list_del_leaf_cfs_rq(tg->cfs_rq[cpu]); : : : : if (!cfs_rq_is_decayed(cfs_rq) || cfs_rq->nr_running) (3) : list_add_leaf_cfs_rq(cfs_rq); : : : : : : : : : ---truncated---

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - In the Linux kernel, the following vulnerability has been resolved: sched/fair: Prevent dead task groups     from regaining cfs_rq's Kevin is reporting crashes which point to a use-after-free of a cfs_rq in     update_blocked_averages(). Initial debugging revealed that we've live cfs_rq's (on_list=1) in an about to     be kfree()'d task group in free_fair_sched_group(). However, it was unclear how that can happen. His     kernel config happened to lead to a layout of struct sched_entity that put the 'my_q' member directly into     the middle of the object which makes it incidentally overlap with SLUB's freelist pointer. That, in     combination with SLAB_FREELIST_HARDENED's freelist pointer mangling, leads to a reliable access violation     in form of a #GP which made the UAF fail fast. Michal seems to have run into the same issue[1]. He already     correctly diagnosed that commit a7b359fc6a37 (sched/fair: Correctly insert cfs_rq's to list on     unthrottle) is causing the preconditions for the UAF to happen by re-adding cfs_rq's also to task groups     that have no more running tasks, i.e. also to dead ones. His analysis, however, misses the real root cause     and it cannot be seen from the crash backtrace only, as the real offender is tg_unthrottle_up() getting     called via sched_cfs_period_timer() via the timer interrupt at an inconvenient time. When     unregister_fair_sched_group() unlinks all cfs_rq's from the dying task group, it doesn't protect itself     from getting interrupted. If the timer interrupt triggers while we iterate over all CPUs or after     unregister_fair_sched_group() has finished but prior to unlinking the task group, sched_cfs_period_timer()     will execute and walk the list of task groups, trying to unthrottle cfs_rq's, i.e. re-add them to the     dying task group. These will later -- in free_fair_sched_group() -- be kfree()'ed while still being     linked, leading to the fireworks Kevin and Michal are seeing. To fix this race, ensure the dying task     group gets unlinked first. However, simply switching the order of unregistering and unlinking the task     group isn't sufficient, as concurrent RCU walkers might still see it, as can be seen below: CPU1: CPU2: :
    timer IRQ: : do_sched_cfs_period_timer(): : : : distribute_cfs_runtime(): : rcu_read_lock(); : : :
    unthrottle_cfs_rq(): sched_offline_group(): : : walk_tg_tree_from(,tg_unthrottle_up,):
    list_del_rcu(&tg->list); : (1) : list_for_each_entry_rcu(child, &parent->children, siblings) : : (2)     list_del_rcu(&tg->siblings); : : tg_unthrottle_up(): unregister_fair_sched_group(): struct cfs_rq *cfs_rq     = tg->cfs_rq[cpu_of(rq)]; : : list_del_leaf_cfs_rq(tg->cfs_rq[cpu]); : : : : if     (!cfs_rq_is_decayed(cfs_rq) || cfs_rq->nr_running) (3) : list_add_leaf_cfs_rq(cfs_rq); : : : : : : : : :
    ---truncated--- (CVE-2021-47209)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:1659-1 advisory.

    The SUSE Linux Enterprise 15 SP5 kernel was updated to receive various security bugfixes.


    The following security bugs were fixed:

    - CVE-2024-26760: Fixed scsi/target/pscsi bio_put() for error case (bsc#1222596).
    - CVE-2024-27389: Fixed pstore inode handling with d_invalidate() (bsc#1223705).
    - CVE-2024-27062: Fixed nouveau lock inside client object tree (bsc#1223834).
    - CVE-2024-27056: Fixed wifi/iwlwifi/mvm to ensure offloading TID queue exists (bsc#1223822).
    - CVE-2024-27046: Fixed nfp/flower handling acti_netdevs allocation failure (bsc#1223827).
    - CVE-2024-27043: Fixed a use-after-free in edia/dvbdev in different places (bsc#1223824).
    - CVE-2024-27041: Fixed drm/amd/display NULL checks for adev->dm.dc in amdgpu_dm_fini() (bsc#1223714).
    - CVE-2024-27039: Fixed clk/hisilicon/hi3559a an erroneous devm_kfree() (bsc#1223821).
    - CVE-2024-27038: Fixed clk_core_get NULL pointer dereference (bsc#1223816).
    - CVE-2024-27030: Fixed octeontx2-af to use separate handlers for interrupts (bsc#1223790).
    - CVE-2024-27014: Fixed net/mlx5e to prevent deadlock while disabling aRFS (bsc#1223735).
    - CVE-2024-27013: Fixed tun limit printing rate when illegal packet received by tun device (bsc#1223745).
    - CVE-2024-26993: Fixed fs/sysfs reference leak in sysfs_break_active_protection() (bsc#1223693).
    - CVE-2024-26982: Fixed Squashfs inode number check not to be an invalid value of zero (bsc#1223634).
    - CVE-2024-26970: Fixed clk/qcom/gcc-ipq6018 termination of frequency table arrays (bsc#1223644).
    - CVE-2024-26969: Fixed clk/qcom/gcc-ipq8074 termination of frequency table arrays (bsc#1223645).
    - CVE-2024-26966: Fixed clk/qcom/mmcc-apq8084 termination of frequency table arrays (bsc#1223646).
    - CVE-2024-26965: Fixed clk/qcom/mmcc-msm8974 termination of frequency table arrays (bsc#1223648).
    - CVE-2024-26960: Fixed mm/swap race between free_swap_and_cache() and swapoff() (bsc#1223655).
    - CVE-2024-26951: Fixed wireguard/netlink check for dangling peer via is_dead instead of empty list     (bsc#1223660).
    - CVE-2024-26950: Fixed wireguard/netlink to access device through ctx instead of peer (bsc#1223661).
    - CVE-2024-26948: Fixed drm/amd/display by adding dc_state NULL check in dc_state_release (bsc#1223664).
    - CVE-2024-26927: Fixed ASoC/SOF bounds checking to firmware data Smatch (bsc#1223525).
    - CVE-2024-26901: Fixed do_sys_name_to_handle() to use kzalloc() to prevent kernel-infoleak (bsc#1223198).
    - CVE-2024-26896: Fixed wifi/wfx memory leak when starting AP (bsc#1223042).
    - CVE-2024-26893: Fixed firmware/arm_scmi for possible double free in SMC transport cleanup path     (bsc#1223196).
    - CVE-2024-26885: Fixed bpf DEVMAP_HASH overflow check on 32-bit arches (bsc#1223190).
    - CVE-2024-26884: Fixed bpf hashtab overflow check on 32-bit arches (bsc#1223189).
    - CVE-2024-26883: Fixed bpf stackmap overflow check on 32-bit arches (bsc#1223035).
    - CVE-2024-26882: Fixed net/ip_tunnel to make sure to pull inner header in ip_tunnel_rcv() (bsc#1223034).
    - CVE-2024-26881: Fixed net/hns3 kernel crash when 1588 is received on HIP08 devices (bsc#1223041).
    - CVE-2024-26879: Fixed clk/meson by adding missing clocks to axg_clk_regmaps (bsc#1223066).
    - CVE-2024-26878: Fixed quota for potential NULL pointer dereference (bsc#1223060).
    - CVE-2024-26866: Fixed spi/spi-fsl-lpspi by removing redundant spi_controller_put call (bsc#1223024).
    - CVE-2024-26862: Fixed packet annotate data-races around ignore_outgoing (bsc#1223111).
    - CVE-2024-26861: Fixed wireguard/receive annotate data-race around receiving_counter.counter     (bsc#1223076).
    - CVE-2024-26857: Fixed geneve to make sure to pull inner header in geneve_rx() (bsc#1223058).
    - CVE-2024-26856: Fixed use-after-free inside sparx5_del_mact_entry (bsc#1223052).
    - CVE-2024-26855: Fixed net/ice potential NULL pointer dereference in ice_bridge_setlink() (bsc#1223051).
    - CVE-2024-26853: Fixed igc returning frame twice in XDP_REDIRECT (bsc#1223061).
    - CVE-2024-26852: Fixed net/ipv6 to avoid possible UAF in ip6_route_mpath_notify() (bsc#1223057).
    - CVE-2024-26848: Fixed afs endless loop in directory parsing (bsc#1223030).
    - CVE-2024-26836: Fixed platform/x86/think-lmi password opcode ordering for workstations (bsc#1222968).
    - CVE-2024-26830: Fixed i40e to not allow untrusted VF to remove administratively set MAC (bsc#1223012).
    - CVE-2024-26817: Fixed amdkfd to use calloc instead of kzalloc to avoid integer overflow (bsc#1222812).
    - CVE-2024-26816: Fixed relocations in .notes section when building with CONFIG_XEN_PV=y by ignoring them     (bsc#1222624).
    - CVE-2024-26807: Fixed spi/cadence-qspi NULL pointer reference in runtime PM hooks (bsc#1222801).
    - CVE-2024-26805: Fixed a kernel-infoleak-after-free in __skb_datagram_iter in netlink  (bsc#1222630).
    - CVE-2024-26793: Fixed an use-after-free and null-ptr-deref in gtp_newlink() in gtp  (bsc#1222428).
    - CVE-2024-26783: Fixed mm/vmscan bug when calling wakeup_kswapd() with a wrong zone index (bsc#1222615).
    - CVE-2024-26773: Fixed ext4 block allocation from corrupted group in ext4_mb_try_best_found()     (bsc#1222618).
    - CVE-2024-26772: Fixed ext4 to avoid allocating blocks from corrupted group in ext4_mb_find_by_goal()     (bsc#1222613).
    - CVE-2024-26771: Fixed a null pointer dereference on edma_probe in dmaengine ti edma  (bsc#1222610)
    - CVE-2024-26766: Fixed SDMA off-by-one error in _pad_sdma_tx_descs() (bsc#1222726).
    - CVE-2024-26764: Fixed IOCB_AIO_RW check in fs/aio before the struct aio_kiocb conversion (bsc#1222721).
    - CVE-2024-26763: Fixed user corruption via by writing data with O_DIRECT on device in dm-crypt     (bsc#1222720).
    - CVE-2024-26754: Fixed an use-after-free and null-ptr-deref in gtp_genl_dump_pdp() in gtp  (bsc#1222632).
    - CVE-2024-26751: Fixed ARM/ep93xx terminator to gpiod_lookup_table (bsc#1222724).
    - CVE-2024-26744: Fixed null pointer dereference in srpt_service_guid parameter in rdma/srpt     (bsc#1222449).
    - CVE-2024-26743: Fixed memory leak in qedr_create_user_qp error flow in rdma/qedr (bsc#1222677).
    - CVE-2024-26737: Fixed selftests/bpf racing between bpf_timer_cancel_and_free and bpf_timer_cancel     (bsc#1222557).
    - CVE-2024-26733: Fixed an overflow in arp_req_get() in arp (bsc#1222585).
    - CVE-2024-26727: Fixed assertion if a newly created btrfs subvolume already gets read (bsc#1222536).
    - CVE-2024-26718: Fixed dm-crypt/dm-verity disable tasklets (bsc#1222416).
    - CVE-2024-26704: Fixed a double-free of blocks due to wrong extents moved_len in ext4 (bsc#1222422).
    - CVE-2024-26696: Fixed nilfs2 hang in nilfs_lookup_dirty_data_buffers() (bsc#1222549).
    - CVE-2024-26689: Fixed a use-after-free in encode_cap_msg() (bsc#1222503).
    - CVE-2024-26687: Fixed xen/events close evtchn after mapping cleanup (bsc#1222435).
    - CVE-2024-26685: Fixed nilfs2 potential bug in end_buffer_async_write (bsc#1222437).
    - CVE-2024-26684: Fixed net/stmmac/xgmac handling of DPP safety error for DMA channels (bsc#1222445).
    - CVE-2024-26681: Fixed netdevsim to avoid potential loop in nsim_dev_trap_report_work() (bsc#1222431).
    - CVE-2024-26680: Fixed net/atlantic DMA mapping for PTP hwts ring (bsc#1222427).
    - CVE-2024-26675: Fixed ppp_async to limit MRU to 64K (bsc#1222379).
    - CVE-2024-26673: Fixed netfilter/nft_ct layer 3 and 4 protocol sanitization (bsc#1222368).
    - CVE-2024-26671: Fixed blk-mq IO hang from sbitmap wakeup race (bsc#1222357).
    - CVE-2024-26660: Fixed drm/amd/display bounds check for stream encoder creation (bsc#1222266).
    - CVE-2024-26656: Fixed drm/amdgpu use-after-free bug (bsc#1222307).
    - CVE-2024-26610: Fixed memory corruption in wifi/iwlwifi (bsc#1221299).
    - CVE-2024-26601: Fixed ext4 buddy bitmap corruption via fast commit replay (bsc#1220342).
    - CVE-2024-23850: Fixed double free of anonymous device after snapshot  creation failure (bsc#1219126).
    - CVE-2024-23848: Fixed media/cec for possible use-after-free in cec_queue_msg_fh (bsc#1219104).
    - CVE-2024-23307: Fixed Integer Overflow or Wraparound vulnerability in x86 and ARM md, raid, raid5     modules (bsc#1219169).
    - CVE-2024-22099: Fixed a null-pointer-dereference in rfcomm_check_security (bsc#1219170).
    - CVE-2024-0841: Fixed a null pointer dereference in the hugetlbfs_fill_super function in hugetlbfs     (HugeTLB pages) functionality (bsc#1219264).
    - CVE-2024-0639: Fixed a denial-of-service vulnerability due to a deadlock found in sctp_auto_asconf_init     in net/sctp/socket.c (bsc#1218917).
    - CVE-2023-6270: Fixed a use-after-free issue in aoecmd_cfg_pkts (bsc#1218562).
    - CVE-2023-52652: Fixed NTB for possible name leak in ntb_register_device() (bsc#1223686).
    - CVE-2023-52645: Fixed pmdomain/mediatek race conditions with genpd (bsc#1223033).
    - CVE-2023-52636: Fixed libceph cursor init when preparing sparse read in msgr2 (bsc#1222247).
    - CVE-2023-52635: Fixed PM/devfreq to synchronize devfreq_monitor_[start/stop] (bsc#1222294).
    - CVE-2023-52627: Fixed iio:adc:ad7091r exports into IIO_AD7091R namespace (bsc#1222051).
    - CVE-2023-52620: Fixed netfilter/nf_tables to disallow timeout for anonymous sets never used from     userspace (bsc#1221825).
    - CVE-2023-52616: Fixed unexpected pointer access in crypto/lib/mpi in mpi_ec_init (bsc#1221612).
    - CVE-2023-52614: Fixed PM/devfreq buffer overflow in trans_stat_show (bsc#1221617).
    - CVE-2023-52593: Fixed wifi/wfx possible NULL pointer dereference in wfx_set_mfp_ap() (bsc#1221042).
    - CVE-2023-52591: Fixed a possible reiserfs filesystem corruption via directory renaming (bsc#1221044).
    - CVE-2023-52590: Fixed a possible ocfs2 filesystem corruption via directory renaming (bsc#1221088).
    - CVE-2023-52589: Fixed media/rkisp1 IRQ disable race issue (bsc#1221084).
    - CVE-2023-52585: Fixed drm/amdgpu for possible NULL pointer dereference in     amdgpu_ras_query_error_status_helper() (bsc#1221080).
    - CVE-2023-52561: Fixed arm64/dts/qcom/sdm845-db845c to mark cont splash memory region (bsc#1220935).
    - CVE-2023-52503: Fixed tee/amdtee use-after-free vulnerability in amdtee_close_session (bsc#1220915).
    - CVE-2023-52488: Fixed serial/sc16is7xx convert from _raw_ to _noinc_ regmap functions for FIFO     (bsc#1221162).
    - CVE-2022-48662: Fixed a general protection fault (GPF) in i915_perf_open_ioctl (bsc#1223505).
    - CVE-2022-48659: Fixed mm/slub to return errno if kmalloc() fails (bsc#1223498).
    - CVE-2022-48658: Fixed mm/slub to avoid a problem in flush_cpu_slab()/__free_slab() task context     (bsc#1223496).
    - CVE-2022-48651: Fixed an out-of-bound bug in ipvlan caused by unset skb->mac_header (bsc#1223513).
    - CVE-2022-48642: Fixed netfilter/nf_tables percpu memory leak at nf_tables_addchain() (bsc#1223478).
    - CVE-2022-48640: Fixed bonding for possible NULL pointer dereference in bond_rr_gen_slave_id     (bsc#1223499).
    - CVE-2022-48631: Fixed a bug in ext4, when parsing extents where eh_entries == 0 and eh_depth > 0     (bsc#1223475).
    - CVE-2021-47214: Fixed hugetlb/userfaultfd during restore reservation in hugetlb_mcopy_atomic_pte()     (bsc#1222710).
    - CVE-2021-47202: Fixed NULL pointer dereferences in of_thermal_ functions (bsc#1222878)
    - CVE-2021-47200: Fixed drm/prime for possible use-after-free in mmap within drm_gem_ttm_mmap() and     drm_gem_ttm_mmap() (bsc#1222838).
    - CVE-2021-47195: Fixed use-after-free inside SPI via add_lock mutex (bsc#1222832).
    - CVE-2021-47189: Fixed denial of service due to memory ordering issues between normal and ordered work     functions in btrfs (bsc#1222706).
    - CVE-2021-47185: Fixed a softlockup issue in flush_to_ldisc in tty tty_buffer (bsc#1222669).
    - CVE-2021-47183: Fixed a null pointer dereference during link down processing in scsi lpfc (bsc#1192145,     bsc#1222664).
    - CVE-2021-47182: Fixed scsi_mode_sense() buffer length handling (bsc#1222662).
    - CVE-2021-47181: Fixed a null pointer dereference caused by calling platform_get_resource()     (bsc#1222660).


Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:1644-1 advisory.

    The SUSE Linux Enterprise 15 SP5 Azure kernel was updated to receive various security bugfixes.


    The following security bugs were fixed:

    - CVE-2024-27389: Fixed pstore inode handling with d_invalidate() (bsc#1223705).
    - CVE-2024-27062: Fixed nouveau lock inside client object tree (bsc#1223834).
    - CVE-2024-27056: Fixed wifi/iwlwifi/mvm to ensure offloading TID queue exists (bsc#1223822).
    - CVE-2024-27046: Fixed nfp/flower handling acti_netdevs allocation failure (bsc#1223827).
    - CVE-2024-27043: Fixed a use-after-free in edia/dvbdev in different places (bsc#1223824).
    - CVE-2024-27042: Fixed drm/amdgpu for potential out-of-bounds access in amdgpu_discovery_reg_base_init()     (bsc#1223823).
    - CVE-2024-27041: Fixed drm/amd/display NULL checks for adev->dm.dc in amdgpu_dm_fini() (bsc#1223714).
    - CVE-2024-27039: Fixed clk/hisilicon/hi3559a an erroneous devm_kfree() (bsc#1223821).
    - CVE-2024-27038: Fixed clk_core_get NULL pointer dereference (bsc#1223816).
    - CVE-2024-27030: Fixed octeontx2-af to use separate handlers for interrupts (bsc#1223790).
    - CVE-2024-27014: Fixed net/mlx5e to prevent deadlock while disabling aRFS (bsc#1223735).
    - CVE-2024-27013: Fixed tun limit printing rate when illegal packet received by tun device (bsc#1223745).
    - CVE-2024-26993: Fixed fs/sysfs reference leak in sysfs_break_active_protection() (bsc#1223693).
    - CVE-2024-26982: Fixed Squashfs inode number check not to be an invalid value of zero (bsc#1223634).
    - CVE-2024-26970: Fixed clk/qcom/gcc-ipq6018 termination of frequency table arrays (bsc#1223644).
    - CVE-2024-26969: Fixed clk/qcom/gcc-ipq8074 termination of frequency table arrays (bsc#1223645).
    - CVE-2024-26966: Fixed clk/qcom/mmcc-apq8084 termination of frequency table arrays (bsc#1223646).
    - CVE-2024-26965: Fixed clk/qcom/mmcc-msm8974 termination of frequency table arrays (bsc#1223648).
    - CVE-2024-26960: Fixed mm/swap race between free_swap_and_cache() and swapoff() (bsc#1223655).
    - CVE-2024-26951: Fixed wireguard/netlink check for dangling peer via is_dead instead of empty list     (bsc#1223660).
    - CVE-2024-26950: Fixed wireguard/netlink to access device through ctx instead of peer (bsc#1223661).
    - CVE-2024-26948: Fixed drm/amd/display by adding dc_state NULL check in dc_state_release (bsc#1223664).
    - CVE-2024-26939: Fixed drm/i915/vma UAF on destroy against retire race (bsc#1223679).
    - CVE-2024-26927: Fixed ASoC/SOF bounds checking to firmware data Smatch (bsc#1223525).
    - CVE-2024-26915: Fixed drm/amdgpu reset IH OVERFLOW_CLEAR bit (bsc#1223207).
    - CVE-2024-26901: Fixed do_sys_name_to_handle() to use kzalloc() to prevent kernel-infoleak (bsc#1223198).
    - CVE-2024-26898: Fixed aoe potential use-after-free problem in aoecmd_cfg_pkts (bsc#1223016).
    - CVE-2024-26896: Fixed wifi/wfx memory leak when starting AP (bsc#1223042).
    - CVE-2024-26893: Fixed firmware/arm_scmi for possible double free in SMC transport cleanup path     (bsc#1223196).
    - CVE-2024-26885: Fixed bpf DEVMAP_HASH overflow check on 32-bit arches (bsc#1223190).
    - CVE-2024-26884: Fixed bpf hashtab overflow check on 32-bit arches (bsc#1223189).
    - CVE-2024-26883: Fixed bpf stackmap overflow check on 32-bit arches (bsc#1223035).
    - CVE-2024-26882: Fixed net/ip_tunnel to make sure to pull inner header in ip_tunnel_rcv() (bsc#1223034).
    - CVE-2024-26881: Fixed net/hns3 kernel crash when 1588 is received on HIP08 devices (bsc#1223041).
    - CVE-2024-26879: Fixed clk/meson by adding missing clocks to axg_clk_regmaps (bsc#1223066).
    - CVE-2024-26878: Fixed quota for potential NULL pointer dereference (bsc#1223060).
    - CVE-2024-26876: Fixed drm/bridge/adv7511 crash on irq during probe (bsc#1223119).
    - CVE-2024-26866: Fixed spi/spi-fsl-lpspi by removing redundant spi_controller_put call (bsc#1223024).
    - CVE-2024-26862: Fixed packet annotate data-races around ignore_outgoing (bsc#1223111).
    - CVE-2024-26861: Fixed wireguard/receive annotate data-race around receiving_counter.counter     (bsc#1223076).
    - CVE-2024-26857: Fixed geneve to make sure to pull inner header in geneve_rx() (bsc#1223058).
    - CVE-2024-26856: Fixed use-after-free inside sparx5_del_mact_entry (bsc#1223052).
    - CVE-2024-26855: Fixed net/ice potential NULL pointer dereference in ice_bridge_setlink() (bsc#1223051).
    - CVE-2024-26853: Fixed igc returning frame twice in XDP_REDIRECT (bsc#1223061).
    - CVE-2024-26852: Fixed net/ipv6 to avoid possible UAF in ip6_route_mpath_notify() (bsc#1223057).
    - CVE-2024-26840: Fixed a memory leak in cachefiles_add_cache() (bsc#1222976).
    - CVE-2024-26836: Fixed platform/x86/think-lmi password opcode ordering for workstations (bsc#1222968).
    - CVE-2024-26830: Fixed i40e to not allow untrusted VF to remove administratively set MAC (bsc#1223012).
    - CVE-2024-26817: Fixed amdkfd to use calloc instead of kzalloc to avoid integer overflow (bsc#1222812).
    - CVE-2024-26816: Fixed relocations in .notes section when building with CONFIG_XEN_PV=y by ignoring them     (bsc#1222624).
    - CVE-2024-26791: Fixed btrfs/dev-replace properly validate device names (bsc#1222793).
    - CVE-2024-26783: Fixed mm/vmscan bug when calling wakeup_kswapd() with a wrong zone index (bsc#1222615).
    - CVE-2024-26773: Fixed ext4 block allocation from corrupted group in ext4_mb_try_best_found()     (bsc#1222618).
    - CVE-2024-26772: Fixed ext4 to avoid allocating blocks from corrupted group in ext4_mb_find_by_goal()     (bsc#1222613).
    - CVE-2024-26766: Fixed SDMA off-by-one error in _pad_sdma_tx_descs() (bsc#1222726).
    - CVE-2024-26764: Fixed IOCB_AIO_RW check in fs/aio before the struct aio_kiocb conversion (bsc#1222721).
    - CVE-2024-26733: Fixed an overflow in arp_req_get() in arp (bsc#1222585).
    - CVE-2024-26700: Fixed drm/amd/display MST Null pointer dereference  for RV (bsc#1222870).
    - CVE-2024-26687: Fixed xen/events close evtchn after mapping cleanup (bsc#1222435).
    - CVE-2024-26679: Fixed inet read sk->sk_family once in inet_recv_error() (bsc#1222385).
    - CVE-2024-26675: Fixed ppp_async to limit MRU to 64K (bsc#1222379).
    - CVE-2024-26673: Fixed netfilter/nft_ct layer 3 and 4 protocol sanitization (bsc#1222368).
    - CVE-2024-26671: Fixed blk-mq IO hang from sbitmap wakeup race (bsc#1222357).
    - CVE-2024-26656: Fixed drm/amdgpu use-after-free bug (bsc#1222307).
    - CVE-2024-26610: Fixed memory corruption in wifi/iwlwifi (bsc#1221299).
    - CVE-2024-26601: Fixed ext4 buddy bitmap corruption via fast commit replay (bsc#1220342).
    - CVE-2024-23850: Fixed double free of anonymous device after snapshot  creation failure (bsc#1219126).
    - CVE-2024-23848: Fixed media/cec for possible use-after-free in cec_queue_msg_fh (bsc#1219104).
    - CVE-2024-23307: Fixed Integer Overflow or Wraparound vulnerability in x86 and ARM md, raid, raid5     modules (bsc#1219169).
    - CVE-2024-22099: Fixed a null-pointer-dereference in rfcomm_check_security (bsc#1219170).
    - CVE-2024-2201: Fixed information leak in x86/BHI (bsc#1217339).
    - CVE-2024-0841: Fixed a null pointer dereference in the hugetlbfs_fill_super function in hugetlbfs     (HugeTLB pages) functionality (bsc#1219264).
    - CVE-2024-0639: Fixed a denial-of-service vulnerability due to a deadlock found in sctp_auto_asconf_init     in net/sctp/socket.c (bsc#1218917).
    - CVE-2023-6270: Fixed a use-after-free issue in aoecmd_cfg_pkts (bsc#1218562).
    - CVE-2023-52652: Fixed NTB for possible name leak in ntb_register_device() (bsc#1223686).
    - CVE-2023-52645: Fixed pmdomain/mediatek race conditions with genpd (bsc#1223033).
    - CVE-2023-52635: Fixed PM/devfreq to synchronize devfreq_monitor_[start/stop] (bsc#1222294).
    - CVE-2023-52620: Fixed netfilter/nf_tables to disallow timeout for anonymous sets never used from     userspace (bsc#1221825).
    - CVE-2023-52616: Fixed unexpected pointer access in crypto/lib/mpi in mpi_ec_init (bsc#1221612).
    - CVE-2023-52614: Fixed PM/devfreq buffer overflow in trans_stat_show (bsc#1221617).
    - CVE-2023-52593: Fixed wifi/wfx possible NULL pointer dereference in wfx_set_mfp_ap() (bsc#1221042).
    - CVE-2023-52591: Fixed a possible reiserfs filesystem corruption via directory renaming (bsc#1221044).
    - CVE-2023-52590: Fixed a possible ocfs2 filesystem corruption via directory renaming (bsc#1221088).
    - CVE-2023-52589: Fixed media/rkisp1 IRQ disable race issue (bsc#1221084).
    - CVE-2023-52585: Fixed drm/amdgpu for possible NULL pointer dereference in     amdgpu_ras_query_error_status_helper() (bsc#1221080).
    - CVE-2022-48662: Fixed a general protection fault (GPF) in i915_perf_open_ioctl (bsc#1223505).
    - CVE-2022-48659: Fixed mm/slub to return errno if kmalloc() fails (bsc#1223498).
    - CVE-2022-48658: Fixed mm/slub to avoid a problem in flush_cpu_slab()/__free_slab() task context     (bsc#1223496).
    - CVE-2022-48651: Fixed an out-of-bound bug in ipvlan caused by unset skb->mac_header (bsc#1223513).
    - CVE-2022-48642: Fixed netfilter/nf_tables percpu memory leak at nf_tables_addchain() (bsc#1223478).
    - CVE-2022-48640: Fixed bonding for possible NULL pointer dereference in bond_rr_gen_slave_id     (bsc#1223499).
    - CVE-2022-48631: Fixed a bug in ext4, when parsing extents where eh_entries == 0 and eh_depth > 0     (bsc#1223475).
    - CVE-2021-47214: Fixed hugetlb/userfaultfd during restore reservation in hugetlb_mcopy_atomic_pte()     (bsc#1222710).
    - CVE-2021-47211: Fixed a null pointer dereference on pointer cs_desc in usb-audio (bsc#1222869).
    - CVE-2021-47207: Fixed a null pointer dereference on pointer block in gus (bsc#1222790).
    - CVE-2021-47205: Unregistered clocks/resets when unbinding in sunxi-ng (bsc#1222888).
    - CVE-2021-47202: Fixed NULL pointer dereferences in of_thermal_ functions (bsc#1222878)
    - CVE-2021-47200: Fixed drm/prime for possible use-after-free in mmap within drm_gem_ttm_mmap() and     drm_gem_ttm_mmap() (bsc#1222838).
    - CVE-2021-47195: Fixed use-after-free inside SPI via add_lock mutex (bsc#1222832).
    - CVE-2021-47185: Fixed a softlockup issue in flush_to_ldisc in tty tty_buffer (bsc#1222669).
    - CVE-2021-47184: Fixed NULL pointer dereference on VSI filter sync (bsc#1222666).


Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2024:1641-1 advisory.

    The SUSE Linux Enterprise 15 SP4 LTSS kernel was updated to receive various security bugfixes.


    The following security bugs were fixed:

    - CVE-2024-27389: Fixed pstore inode handling with d_invalidate() (bsc#1223705).
    - CVE-2024-27043: Fixed a use-after-free in edia/dvbdev in different places (bsc#1223824).
    - CVE-2024-26816: Ignore relocations in .notes section when building with CONFIG_XEN_PV=y (bsc#1222624).
    - CVE-2024-26773: Fixed ext4 block allocation from corrupted group in ext4_mb_try_best_found()     (bsc#1222618).
    - CVE-2024-26766: Fixed SDMA off-by-one error in _pad_sdma_tx_descs() (bsc#1222726).
    - CVE-2024-26764: Fixed IOCB_AIO_RW check in fs/aio before the struct aio_kiocb conversion (bsc#1222721).
    - CVE-2024-26733: Fixed an overflow in arp_req_get() in arp (bsc#1222585).
    - CVE-2024-26727: Fixed assertion if a newly created btrfs subvolume already gets read (bsc#1222536).
    - CVE-2024-26704: Fixed a double-free of blocks due to wrong extents moved_len in ext4 (bsc#1222422).
    - CVE-2024-26689: Fixed a use-after-free in encode_cap_msg() (bsc#1222503).
    - CVE-2024-26687: Fixed xen/events close evtchn after mapping cleanup (bsc#1222435).
    - CVE-2024-26642: Fixed the set of anonymous timeout flag in netfilter nf_tables (bsc#1221830).
    - CVE-2024-26614: Fixed the initialization of accept_queue's spinlocks (bsc#1221293).
    - CVE-2024-26610: Fixed memory corruption in wifi/iwlwifi (bsc#1221299).
    - CVE-2024-26601: Fixed ext4 buddy bitmap corruption via fast commit replay (bsc#1220342).
    - CVE-2024-25742: Fixed insufficient validation during #VC instruction emulation in x86/sev (bsc#1221725).
    - CVE-2024-23850: Fixed double free of anonymous device after snapshot  creation failure (bsc#1219126).
    - CVE-2024-23307: Fixed Integer Overflow or Wraparound vulnerability in x86 and ARM md, raid, raid5     modules (bsc#1219169).
    - CVE-2024-22099: Fixed a null-pointer-dereference in rfcomm_check_security (bsc#1219170).
    - CVE-2024-0841: Fixed a null pointer dereference in the hugetlbfs_fill_super function in hugetlbfs     (HugeTLB pages) functionality (bsc#1219264).
    - CVE-2023-7192: Fixed a memory leak problem in ctnetlink_create_conntrack in     net/netfilter/nf_conntrack_netlink.c (bsc#1218479).
    - CVE-2023-7042: Fixed a null-pointer-dereference in ath10k_wmi_tlv_op_pull_mgmt_tx_compl_ev()     (bsc#1218336).
    - CVE-2023-6270: Fixed a use-after-free issue in aoecmd_cfg_pkts (bsc#1218562).
    - CVE-2023-52628: Fixed 4-byte stack OOB write in nftables (bsc#1222117).
    - CVE-2023-52616: Fixed unexpected pointer access in crypto/lib/mpi in mpi_ec_init (bsc#1221612).
    - CVE-2023-52607: Fixed NULL pointer dereference in pgtable_cache_add kasprintf() (bsc#1221061).
    - CVE-2023-52591: Fixed a possible reiserfs filesystem corruption via directory renaming (bsc#1221044).
    - CVE-2023-52590: Fixed a possible ocfs2 filesystem corruption via directory renaming (bsc#1221088).
    - CVE-2023-52500: Fixed information leaking when processing OPC_INB_SET_CONTROLLER_CONFIG command     (bsc#1220883).
    - CVE-2023-52476: Fixed possible unhandled page fault via perf sampling NMI during vsyscall (bsc#1220703).
    - CVE-2023-4881: Fixed a out-of-bounds write flaw in the netfilter subsystem that could lead to potential     information disclosure or a denial of service (bsc#1215221).
    - CVE-2023-0160: Fixed deadlock flaw in BPF that could allow a local user to potentially crash the system     (bsc#1209657).
    - CVE-2022-48662: Fixed a general protection fault (GPF) in i915_perf_open_ioctl (bsc#1223505).
    - CVE-2022-48651: Fixed an out-of-bound bug in ipvlan caused by unset skb->mac_header (bsc#1223513).
    - CVE-2021-47202: Fixed NULL pointer dereferences in of_thermal_ functions (bsc#1222878)
    - CVE-2021-47195: Fixed use-after-free inside SPI via add_lock mutex (bsc#1222832).
    - CVE-2021-47189: Fixed denial of service due to memory ordering issues between normal and ordered work     functions in btrfs (bsc#1222706).
    - CVE-2021-47185: Fixed a softlockup issue in flush_to_ldisc in tty tty_buffer (bsc#1222669).
    - CVE-2021-47183: Fixed a null pointer dereference during link down processing in scsi lpfc (bsc#1192145,     bsc#1222664).
    - CVE-2021-47182: Fixed scsi_mode_sense() buffer length handling (bsc#1222662).
    - CVE-2021-47181: Fixed a null pointer dereference caused by calling platform_get_resource()     (bsc#1222660).


Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
248204	Linux Distros Unpatched Vulnerability : CVE-2021-47209	Nessus	Misc.	medium
202537	EulerOS 2.0 SP9 : kernel (EulerOS-SA-2024-1964)	Nessus	Huawei Local Security Checks	high
197174	SUSE SLED15: cluster-md-kmp-64kb / cluster-md-kmp-default / dlm-kmp-64kb / etc (SUSE-SU-2024:1659-1)	Nessus	SuSE Local Security Checks	high
197056	SUSE SLES15: cluster-md-kmp-azure / dlm-kmp-azure / gfs2-kmp-azure / etc (SUSE-SU-2024:1644-1)	Nessus	SuSE Local Security Checks	high
197051	SUSE SLES15: cluster-md-kmp-default / dlm-kmp-default / gfs2-kmp-default / etc (SUSE-SU-2024:1641-1)	Nessus	SuSE Local Security Checks	high

Detections

Analytics

CVE-2021-47209

medium

Tenable Plugins

medium

high

high

high

high